This may be why the Jansen's left Denmark:
Without a navy and crippled by huge debts and a loss of much of its prestige, Denmark sank into poverty. In 1813, the national treasury went bankrupt. Several years later, especially between 1818 and 1824, the price of grain virtually collapsed, which culminated in many farm failures and a massive exodus from Denmark to the New World. The country's precarious financial and military position also put a virtual end to any hope of liberal reforms.
And a marriage record:
Midwest Historical and Genealogical Society has a number of Sedgwick County, KS marriage affidavits in their library...
| Jansen, Albert J. | Mies, Mary A. | November 20, 1906 | K440 |
| Jansen, Anna | Holmes, R.B. | October 26, 1910 | N417 |
| Jansen, Anna Dora | Behner, G.B. McClellen | January 1, 1888 | D189 |
| Jansen, B.A. | Beaver, H.E. | June 12, 1912 | P275 |
| Jansen, Charles | Prock, Zoela | May 1, 1918 | V126 |
| Jansen, Edward O. | Tomford, Lulu | January 29, 1906 | K189 |
| Jansen, Elizabeth L. | Evertz, Adam | November 26, 1891 | E426 |
| Jansen, Elizabeth L. | Ewertz, Adam | November 26, 1891 | E426 |
| Jansen, Etta K. | Mahlandt, A.W. | August 8, 1900 | H375 |
| Jansen, Frances | Jaax, Edward | April 18, 1893 | F114 |
| Jansen, Harman H. | Allen, Bertha R. | October 25, 1910 | N410 |
| Jansen, Helen | Neville, Edward L. | January 15, 1903 | I465 |
| Jansen, Ida M. | Bock, Valentine | April 15, 1890 | E116 |
| Jansen, J. | Pollock, Opal | December 2, 1907 | L222 |
| Jansen, Manda(Amanda) | Baldwin, A.E. | April 25, 1895 | F531 |
| Jansen, Mary C. | Kessler, Loren L. | E064 | |
| Jansen, Minnie | Marnane, Joseph | April 30, 1912 | P211 |
| Jansen, R.L. | Harpstrite, Florence M. | March 2, 1910 | N034 |
| Jansen, Susanna(soma) | Springob, Peter | June 5, 1900 | H331 |
| Janson, Maud Cordella | Myers, Clarence Arthur | May 20, 1908 | L407 |
| Janssen, Anna | Seiler, Peter | January 16, 1883 | B338 |
| Daily, Charles E. | Prock, May E. | January 20, 1900 | H259 |

This isn't all that I have, but some of the more interesting tidbits on G'pa's family that hasn't already been said. I have a lot on G'ma's family too.
We'll just end with a picture of some happy people. :-) They are just too cute!!